This is one of the many possible siren configurations for the 555 integrated circuit. We found it in the October 1992 Radio Electronics magazine. It has a power stage.
When the power is turned on, the output that goes to the high Iogic Ievel is not necessarily the...
This circuit was obtained from an English magazine from 1977. The magazine no longer exists, but...
Found in a manufacturer documentation from the 90s, this circuit makes use of period components. The...